On May 30, 2022, Hongseok Yang (양홍석) from KAIST and the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on how to use symmetries to improve learning with SATNet at the Discrete Math Seminar. The title of his talk was “Learning Symmetric Rules with SATNet“.

## KSIAM 2022 Spring Conference was held at the IBS

On May 27-29, 2022, the KSIAM 2022 Spring Conference was held at the IBS Science Culture Center, located at the IBS. For Combinatorics, there was a special session on graph theory organized by Sang-il Oum, a special session on enumerative combinatorics organized by Dongsu Kim, and an invited talk by Joonkyung Lee on May 27, 2022. Both IBS Discrete Mathematics Group and the IBS Biomedical Mathematics Group participated as one of the organizing institutions of the KSIAM 2022 Spring Conference.

## Sebastian Siebertz gave an online talk on producing a long path by a first-order transduction from a class of graphs of unbounded shrubdepth at the Virtual Discrete Math Colloquium

On May 25, 2022, Sebastian Siebertz from the University of Bremen gave an online talk at the Virtual Discrete Math Colloquim on producing a long path by a first-order transduction from a class of graphs of unbounded shrubdepth. The title of his talk was “Transducing paths in graph classes with unbounded shrubdepth“.

## Stijn Cambie gave a talk on the diameter of the reconfiguration graphs arising from the list coloring and the DP-coloring of graphs at the Discrete Math Seminar

On May 23, 2022, Stijn Cambie from the IBS Extremal Combinatorics and Probability Group gave a talk at the Discrete Math Seminar on the problem of determining the diameter of the reconfiguration graphs arising from the list coloring and the DP-coloring of graphs. The title of his talk was “The precise diameter of reconfiguration graphs“.

## Jan Kurkofka gave an online talk on the canonical decomposition of finite graphs into highly connected local parts at the Virtual Discrete Math Colloquium

On May 18, 2022, Jan Kurkofka from the University of Birmingham gave an online talk at the Virtual Discrete Math Colloquium on the canonical decomposition of finite graphs into highly connected local parts. The title of his talk was “Canonical Graph Decompositions via Coverings“.

## Welcome Amadeus Reinald, a visiting graduate student in the IBS Discrete Mathematics Group from the ENS de Lyon

The IBS Discrete Mathematics Group welcomes Amadeus Reinald, a visiting graduate student from the ENS de Lyon in France. He is planning to stay with us until August 26, 2022.

## Welcome Stijn Cambie, a new member of the IBS Extremal Combinatorics and Probability Group

The IBS Discrete Mathematics Group welcomes Dr. **Stijn Cambie**, a new (and first) research fellow at the IBS Extremal Combinatorics and Probability Group from May 16, 2022. He received his Ph.D. from the Radboud University in the Netherlands under the supervision of Prof. Ross Kang. He is interested in extremal problems on various graph parameters and in extremal set theory.

## Andreas Holmsen gave a talk on a colorful generalization of the Goodman-Pollack-Wenger transversal theorem

On May 16, 2022, Andreas Holmsen from KAIST presented a theorem proving a colorful generalization of the Goodman-Pollack-Wenger theorem, answering a conjecture of Arocha, Bracho, and Montejano, at the Discrete Math Seminar. The title of his talk was “A colorful version of the Goodman-Pollack-Wenger transversal theorem“.

## Kyeongsik Nam (남경식) gave a talk on the number of subgraphs isomorphic to a fixed graph in a random graph and the exponential random graph model at the Discrete Math Seminar

On May 9, 2022, Kyeongsik Nam (남경식) from KAIST gave a talk at the Discrete Math Seminar Kyeongsik Nam (남경식) gave a talk on the number of subgraphs isomorphic to a fixed graph in a random graph and the exponential random graph model at the Discrete Math Seminar. The title of his talk was “Large deviations for subgraph counts in random graphs“.

## Cheolwon Heo (허철원) gave a talk on the dichotomy of the problem on deciding the existence of a binary matroid homomorphism to a fixed binary matroid at the Discrete Math Seminar

On May 2, 2022, Cheolwon Heo (허철원) from Sungkyunkwan University gave a talk at the Discrete Math Seminar on the dichotomy of the problem on deciding the existence of a binary matroid homomorphism to a fixed binary matroid. The title of his talk was “The complexity of the matroid-homomorphism problems“.